Renee,
Exploring Grand Cayman by jeep can be fun, but just remember to drive on the left! If you head west of Georgetown you can visit Seven Mile Beach (I'm a beach person so its my favorite place) the Cayman Turtle Farm and Hell. You would travel east from Georgetown to get to the Blowholes. They are situated at the Breakers - about halfway between Boddentown and the East End. If you go in that direction you can travel to the north shore of the island - up to Rum Point.
Nancy